Roussel began writing New Impressions of Africa in 1915 while serving in the French Army during the First World War and it took him seventeen years to complete. "It is hard to believe the immense amount of time composition of this kind of verse requires," he later commented. Mysterious, unnerving, hilarious, haunting, both rigorously logical and dizzyingly sublime, it is truly one of the hidden masterpieces of twentieth-century modernism.